Separable fastener, fastener installation, and method of attaching the same



4Aug. 23, 1932. A. w. KlMBELl. SEPARABLE FASTENER, FASTENER INSTALLATION, AND METHOD OF ATTAGHING THE SAME Filed Aug. 5, 1930 2 Sheets-Sheet .l

[savesezr: Mimik/ww W Bimba@ @M @J1/#waage Aug. 23,1932. A. W. KIMBELL 1,872,968

SPARABLE FASTENER, FASTENER INSTALLATION, AND METHOD OF ATTACHING THE SAME Filed Aug. 5, 1930 2 snets-sheet 2 Patented Aug. 23, 1932 UNITED *STATES PATENT OFFI ARTHUR w. KIMBELL, OE'NEW'TO'N CENTER, MASSACHUSETTS, ASSIGNOR TO UNITED- .CARR EASTENER CORPORATION, OE CAMBRIDGE, MASSACHUSETTS, A CORPORATION F MASSACHUSETTS SEPARAELE EAsTENERgEAsTENEE. INSTALLATION, AND METHOD OE ATTAOHING THE Appiieationmei August 5, 1930. serial` Nonizaias.`

My invention aims to provide` improvements in separable fasteners, fastener instal-V lations and the method of attaching. the Same. In the drawings `which illustrate preferred embodiments of my invention z- Figure l is a section through a snap fastener installation showing one form of my invention; v

Fig. 2 -is a section through the snap `fas- `tener stud `and attaching member Shown in Figure l prior to attaching them to the carrying medium;

Fig. 3 fis a section through a Stud installation .showing a second form of my invention; Y

Fig. 4 is va section through the vstud and rivet shown 'in Fig. 3 prior to attaching them to a carrying medium; l

'Figs. 5 and 6 show a third form of my in` vention; and Y Figs. 7 and 8 show another form of my invention similar to that shown in Figs. 5 and 6, but with a closed end eyelet.

My invention is particularly, though not exclusively,l adapted to snap fasteners and snap fastener installations and I have illus-V trated inthe drawings snap fastener stud.

members which incorporate preferred structures and preferred methods of attachment. Therefore, I shall proceed to describermy invention with reference to the'studs shown."

Heretofore, thereA have been several methods of attaching stud members to'cloth, leather and the like and as many different constructions and assemblies of parts. However, there have rbeen various difficulties encountered which made unsatisfactory installations. For instance, when a stud is to be attached to apiece of knitted material a much stronger installation can be obtained if the yarn is not cut by the shankof ythe attaching member. With any type of at-l taching means known to me it is practically impossibleto secure, by metallic means, a

stud, socket or button to knitted material without cutting the yarn and, while my in-4 vention lovercomes this trouble, 'it is equally advantageous for use with other material due to the strength of the attachment.

The Stud member Shown in the drawings has a base l, a hollow boss pressed from the4 l A base to provide a head 2 and a neck 3 for co.-V operation .withv a socket 4as shown in Fig.` l. The socket may be of any suitable construction. I alsoI use as apart of thevstud unitan eyelet having a base' 5 secured tothe base l of the Stud and a tubular projection 6 extending into the hollow'boss andtoward' the head 2, yas bestV shown in 2. i In Ordei` that the best results may be secured, I provide a 1depressionA in the 'stud head which forms an Vanvil/7 extendingl toward'the tu# bular projection 6 but` being spaced from the end thereof. v The attaching memberwhich I have used in the installation shown in Figure 1 is in the i nature of a` tack 8 having a vhollow shank-9 provided with a tapered end preferably, thoughV not necessarily, rounded atV the pointed end,'as best shown in Fig. 2. i

My improved method of securingthe stud to the carrying medium l0 is to place the stud and attaching `member in a suitable mechanism 'between which the carrying mei dium 10 `may be held.- VAs themechanismis operated to move the parts toward'eachI oth er', the shank of the tack forces its way through-- the threads of the carrying medium' without injury to the threads. 'Then the shank passesthrough the tubular projection 6 of the eyelet and is forced against the anvil 7 During the upsetting operation the closed endportion 11 of the tack is collapsed and forced into the :hollow shank and is separated from the Shank portion 9, as shown in Fig. 1. The shank is vof then spread laterally outwardly by theV anvil l in the same manner as though the attachingA element were a tubular rivet having an open end. The outwardly turned portion 12 of the shank 9 of the attaching member is'turned over the end ofthe tubular projection 6 of Vthe eyelet (Figure l), thereby providing Y of a loosely woven material without injury to factory attachment for `certainnstallations` and the same stud'unit maybeused with,V

`tion with Figs. Band 4.

The tubular rivet portion 14 passes through the material,l through the eyelet and has its .end upset outwardly overthe end ,of the prok jection 6vof the eyelet, as shown in Figure 1. While nowedge piece'is present it is. a satiseither type of attaching element. x

' Referring nowto they embodiments of my invention shown in Figs. 5 Vthrough 8, I have shown *a Afastener stud and installationsthe linesl of those described in` connecalong Figs. 1 to 4,eXcept`that the'head of the Studis made without the depressed anvil portion.V lThe inner surface presents 1a continuously curved surface 15 against which the end ofaclosed rivet or tack 8 is pressed to upset the end laterally over the end of the shank of theeyelet 6, as shown inFig. 4. i

' Fig. 7 showsan installation whichiis theV same as Fig.5,feXcept that the eyelet has a closed end '16" which mayV be pierced by the tapered end ofthe tack shank 8 and when the end of the shank is upset it is bent laterally outwardly with thepierced portion 'of the end 16, thereby'to make fa larger surfaceiengag'ement between the eyeletand the shank 8 than is possible with an openy ended eyelet such as shown'in Fig. 5. v 1 i 1 While I have illustrated and describedpan ticular embodiments of my invention I. do

. medium and having a hollow head, a tubular not wish :to-be limited thereby, becausethe scope of my` invention is bestgdelined by the.V

following claims'. Y A

Y L' 'Clazfsffl 1'. A fastenerv installation comprising, Ain

combination, a carrying medium, a fastener member located atj one side of Ythe carrying portion located within the-hollow head and terminating in spaced relation to the inner Y surfaceof said head, means'provided by said head for upsetting the shank of .an attaching Vmember and an attaching member having a normally closed roundedend hollow shank tapered :adjacent to the end and passing throughfthe said carrying medium, through' the'said tubular portion and having a portion of its end upsetand expanded'laterally over the end of the tubular portion and another portion" wedged into the hollow shank adjacent :to thefree endof the tubular portion f toi secure the fastener member yin Xed rela.

tion to the said carrying medium, the wedged portion of the rivet acting as a stop to prevent.

return of the laterally expanded through the tubular portion.v Y l 2.., A snap fastener installation comprising,

portion Ain combination, a carryingrmedium, a separable fastener memberlocated at one side of said carrying medium and having an-V anvil Vportion andan att-aching relement having a hollow shank provided rwith closed end forced through the carrying mediumV andupsetby said anvil portion, saidanvil portion:

and said shank cooperating to remove theV closed end of the shank and to upset the shank in the manner lof an open end rivet.

13; Asnap fastener installation comprising,

in combination, afcarrying medium, va sepas.

rable fastener member located at one'side of said `carrying. medium fand having an anvilV portion, an attaching element having a hollow shank providedwith a closed end forced through the carrying' medium and upset by 'Y said anvil portion, said anvil portion an'dsaid shank cooperating to removethe closedend ofthe shank and to upsetthe shankinthe mannerv of Y"an open end rivet; and an eyelet member secured to the base of the fastener.

member and having a tubular portionexcgndingltoward the anvil'portiontoprovide means o f for cooperative engagement with the upset p'ortio'nof the shank Vto secure the parts of the installation together.r

4. A snap fastener installation comprising,

yin combination, a carrying medium` aseparable fastener member located atene/.side of said carrying medium and havingahe'ad forengagement with a cooperatinggfastener element, ananvil portion pressed from ySaid*v headfan Zattaching element having a hollow shankr'provided with a closed vend forced through the carrying medium andl upset .byv said .anvil portion, said anvil portion ,andl

said shank cooperating to remove the closed end ofthe shank Aand to upsetthe shank in the manner of an open end rivet andan eye-y f v let member secured to the baseof the fastener z member and having av tubular portion extending toward the anvil portion to provide means #for cooperative engagement with the upsetV portion of the shank to securethe parts of;-

the installation together. v

5.v The method of attachingi'a separable fastenerV member having an anvil portion V,to f

a carrying medium by means cfa hollow.,y

shank attaching member Vhaving a taperedy closed end which comprisesforcing the hol-j low shank of the' attaching member through the carrying medium and against the anvil portion providedby the fastener memberV to sever the closed end from the shank and then turn the tubular shankoutwardly in the manner of upsettingra tubular open endedA rivet.

6. The method of attaching a separable fas-j ltener member having an anvil portion and an Y member to sever the eyelet to a carrying medium by means of a hollow shank attaching member having a tapered closed end which comprises forcing the hollow shank of the attaching member through the carrying medium and against the anvil portion provided by the fastener closed end from the shank and then turn the tubular `shank outwardly over the end of the eyelet in the manner of upsetting a tubular open ended rivet.

7 The method of attaching a separable fas- Y ARTHUR W. KIMBELL.

have signed my 

